﻿/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * Defines the FCKXml object that is used for XML data calls
 * and XML processing.
 *
 * This script is shared by almost all pages that compose the
 * File Browser frameset.
 */

var FCKXml = function()
{}

FCKXml.prototype.GetHttpRequest = function()
{
    // Gecko / IE7
    try { return new XMLHttpRequest(); }
    catch(e) {}

    // IE6
    try { return new ActiveXObject( 'Msxml2.XMLHTTP' ) ; }
    catch(e) {}

    // IE5
    try { return new ActiveXObject( 'Microsoft.XMLHTTP' ) ; }
    catch(e) {}

    return null ;
}

FCKXml.prototype.LoadUrl = function( urlToCall, asyncFunctionPointer )
{
    var oFCKXml = this ;

    var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;

    var oXmlHttp = this.GetHttpRequest() ;

    oXmlHttp.open( "GET", urlToCall, bAsync ) ;

    if ( bAsync )
    {
        oXmlHttp.onreadystatechange = function()
        {
            if ( oXmlHttp.readyState == 4 )
            {
                var oXml ;
                try
                {
                    // this is the same test for an FF2 bug as in fckxml_gecko.js
                    // but we've moved the responseXML assignment into the try{}
                    // so we don't even have to check the return status codes.
                    var test = oXmlHttp.responseXML.firstChild ;
                    oXml = oXmlHttp.responseXML ;
                }
                catch ( e )
                {
                    try
                    {
                        oXml = (new DOMParser()).parseFromString( oXmlHttp.responseText, 'text/xml' ) ;
                    }
                    catch ( e ) {}
                }

                if ( !oXml || !oXml.firstChild || oXml.firstChild.nodeName == 'parsererror' )
                {
                    alert( 'The server didn\'t send back a proper XML response. Please contact your system administrator.\n\n' +
                            'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')\n\n' +
                            'Requested URL:\n' + urlToCall + '\n\n' +
                            'Response text:\n' + oXmlHttp.responseText ) ;
                    return ;
                }

                oFCKXml.DOMDocument = oXml ;
                asyncFunctionPointer( oFCKXml ) ;
            }
        }
    }

    oXmlHttp.send( null ) ;

    if ( ! bAsync )
    {
        if ( oXmlHttp.status == 200 || oXmlHttp.status == 304 )
            this.DOMDocument = oXmlHttp.responseXML ;
        else
        {
            alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
        }
    }
}

FCKXml.prototype.SelectNodes = function( xpath )
{
    if ( navigator.userAgent.indexOf('MSIE') >= 0 )        // IE
        return this.DOMDocument.selectNodes( xpath ) ;
    else                    // Gecko
    {
        var aNodeArray = new Array();

        var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument,
                this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), XPathResult.ORDERED_NODE_ITERATOR_TYPE, null) ;
        if ( xPathResult )
        {
            var oNode = xPathResult.iterateNext() ;
             while( oNode )
             {
                 aNodeArray[aNodeArray.length] = oNode ;
                 oNode = xPathResult.iterateNext();
             }
        }
        return aNodeArray ;
    }
}

FCKXml.prototype.SelectSingleNode = function( xpath )
{
    if ( navigator.userAgent.indexOf('MSIE') >= 0 )        // IE
        return this.DOMDocument.selectSingleNode( xpath ) ;
    else                    // Gecko
    {
        var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument,
                this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), 9, null);

        if ( xPathResult && xPathResult.singleNodeValue )
            return xPathResult.singleNodeValue ;
        else
            return null ;
    }
}
